Modern auth for the mobile skype client itself works fine. Our conditional access policies are working as we designed them (only allowed to connect from a managed (intune enrolled) device. From what I understand, is after the client is running it attempts to contact EWS for free/busy information, and that’s where it falls apart.

On the link about “Apps supporting ADAL / Modern Auth” I see Exchange Online, but I don’t see EWS. I think where this isn’t working is from Skype mobile client to Exchange online – ‘modern auth’ doesn’t work between those two applications.

Currently SfB supports multi-forest, hybrid SfB configurations so long as there is only a single global Lync/Skype deployment.

We have 60k seats of SfB Online that we cannot use today, as we have 2 federated orgs, both hosting separate LYNC/SKYPE deployments (Acquired through M&A) and are blocked in consolidating them due to the multi-Country compliance & regulatory considerations still being weighed.
We have tested it, we know it works (with exception to federation breaking) and we need it supported PLEASE :)

The call queue\attendant routing option isn't good enough. Most of our use cases are based on traditional hunt groups with serial routing. Would like to see the online call queues offer options similar to what we had on-premise!

When configuring the CCE Mediation Server with the cmdlet "Set-CSTenantHybridConfiguration" the cmdlet does not accept fqdns for the Access Edge were a subdomain contains only digits. For example the name "cce-sip.12345.domain.com" will not work. The name "cce-sip.lab12345.domain.com" works.

According to RFC, subdomains will only digits are allows. You can even add the domain to Office 365 and enable SfB Online users with a SIP Address with the all digit domain.

The Skype website currently offers $13.99 Skype International subscription with Office 365 personal included.
I want to suggest an annual Skype International subscription requirement with Office 365 Home included

The only drawback of Skype is that we cannot connect unless the other person is online. It should rather ring or leave a buzz as a notification so as to connect instantly and not otherwise like connect via other means for making the person come online and only then can you talk.

I would love having the ability to make my Microsoft Teams synced with SfB. For exemple, I could send an IM through Teams to another member of my organisation that has not yet adopted the tool and he would receive the message through SfB.

If I try to use an advanced feature only available in Teams, he would receive a link to continue the conversation in Teams to access the feature. Otherwise, voice, video, screen sharing, group chats and other common features would be cross-platform.

Currently, if you have Skype for Business and you have added the person in the list ,who do not have Skype for business means s/he having normal Skype application , with them we are not able to use feature like screen-sharing and video calling facilities.

Add features like Screen-Sharing & Video Call should be included within
contact List of Skype 4 business but not having Skype for Business .